Buggy code:
public final class TSUtils { static final char [ ] ALPHABET = new char [ ] { 'a' , 'b' , 'c' , 'd' , 'e' , 'f' , 'g' , 'h' , 'i' , 'j' , 'k' , 'l' , 'm' , 'n' , 'o' , 'p' , 'q' , 'r' , 's' , 't' , 'u' , 'v' , 'w' , 'x' , 'y' , 'z' } ; private static Logger consoleLogger ; private static Level LOGGING_LEVEL = Level . DEBUG ; private TSUtils ( ) { } public static Timeseries readTS ( String filename , int sizeLimit ) throws TSException , IOException , NumberFormatException { } public static double [ ] readFileColumn ( String filename , int columnIdx , int sizeLimit ) throws TSException , IOException , NumberFormatException { BufferedReader br = new BufferedReader ( new InputStreamReader ( new FileInputStream ( filename ) , "UTF-8" ) ) ; ArrayList < Double > preRes = new ArrayList < Double > ( ) ; int lineCounter = 0 ; String line = null ; while ( ( line = br . readLine ( ) ) != null ) { line = line . trim ( ) ; String [ ] split = line . split ( "\\s+" ) ; if ( ( split . length ) < columnIdx ) { String message = ( ( "Unable<seq2seq4repair_space>to<seq2seq4repair_space>read<seq2seq4repair_space>data<seq2seq4repair_space>from<seq2seq4repair_space>column<seq2seq4repair_space>" + columnIdx ) + "<seq2seq4repair_space>of<seq2seq4repair_space>file<seq2seq4repair_space>" ) + filename ; br . close ( ) ; throw new TSException ( message ) ; } preRes . add ( Double . valueOf ( split [ columnIdx ] ) ) ; lineCounter ++ ; <START_BUG> if ( ( ( 0 != sizeLimit ) || ( ( - 1 ) != sizeLimit ) ) && ( lineCounter >= sizeLimit ) ) { <END_BUG> break ; } } br . close ( ) ; double [ ] res = new double [ preRes . size ( ) ] ; for ( int i = 0 ; i < ( preRes . size ( ) ) ; i ++ ) { res [ i ] = preRes . get ( i ) ; } return res ; } public static double max ( Timeseries series ) { } public static double max ( double [ ] series ) { } public static double min ( Timeseries series ) { } public static double min ( double [ ] series ) { } public static double mean ( Timeseries series ) { } public static double mean ( double [ ] series ) { } public static Integer mean ( int [ ] series ) { } public static double optimizedMean ( double [ ] series ) { } public static double autocorrelation ( Timeseries series , int lag ) { } public static double autocorrelation ( double [ ] series , int lag ) { } public static double var ( Timeseries series ) { } public static double var ( double [ ] series ) { } public static double stDev ( Timeseries series ) { } public static double stDev ( double [ ] series ) { } public static double optimizedStDev ( double [ ] series ) { } public static Timeseries zNormalize ( Timeseries series ) throws TSException , CloneNotSupportedException { } public static double [ ] zNormalize ( double [ ] series ) throws TSException { } public static double [ ] optimizedZNorm ( double [ ] series , double normalizationThreshold ) { } public static Timeseries paa ( Timeseries ts , int paaSize ) throws TSException , CloneNotSupportedException { } public static double [ ] paa ( double [ ] ts , int paaSize ) throws TSException { } public static double [ ] optimizedPaa ( double [ ] ts , int paaSize ) throws TSException { } public static char [ ] ts2String ( Timeseries series , Alphabet alphabet , int alphabetSize ) throws TSException { } public static char [ ] ts2String ( double [ ] vals , double [ ] cuts ) { } public static char [ ] ts2StringWithNaN ( Timeseries series , Alphabet alphabet , int alphabetSize ) throws TSException { } public static char [ ] ts2StringWithNaNByCuts ( Timeseries series , double [ ] cuts ) throws TSException { } public static char num2char ( double value , double [ ] cuts ) { } public static char num2char ( int idx ) { } public static int [ ] ts2Index ( Timeseries series , Alphabet alphabet , int alphabetSize ) throws TSException { } public static int num2index ( double value , double [ ] cuts ) { } public static int countNaN ( double [ ] series ) { } private static int countNaN ( Timeseries series ) { } public static double [ ] [ ] asMatrix ( double [ ] vector ) { } public static double [ ] subseries ( double [ ] series , int start , int length ) throws IndexOutOfBoundsException { } public static double [ ] subseriesByCopy ( double [ ] series , int start , int end ) throws IndexOutOfBoundsException { } public static double [ ] subseries ( Double [ ] series , int start , int length ) throws IndexOutOfBoundsException { } public static double [ ] gaussFilter ( double [ ] series , double filterWidth ) throws TSException { } public double gaussian ( double x , double filterWidth ) { } public static String seriesToString ( double [ ] series , NumberFormat df ) { } public static DiscordRecords series2BruteForceDiscords ( double [ ] series , Integer windowSize , int discordCollectionSize , LargeWindowAlgorithm marker ) throws TSException { } private static DiscordRecord findBestDiscord ( double [ ] series , Integer windowSize , VisitRegistry globalRegistry , LargeWindowAlgorithm marker ) throws TSException { } public static String timeToString ( long start , long finish ) { } }

Fix:
if ( ( ! ( ( 0 == sizeLimit ) || ( ( - 1 ) == sizeLimit ) ) ) && ( lineCounter >= sizeLimit ) ) {